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Diverse polarization angle swings from a repeating fast radio burst source

by Chen, M. Z. , Wang, N. , Lee, K. J. , Chen, X. L. , Luo, R. , Gan, H. Q. , Jiang, J. C. , Guo, Y. J. , Yuan, J. P. , Pan, J. , Li, Z. X. , Wang, B. J. , Yan, W. M. , Hao, L. F. , Zhang, B. , Pei, X. , Xu, H. , Xu, Y. H. , Xu, R. X. , Wang, W. Y. , Yu, D. J. , Qian, L. , Yan, J. , Caballero, R. N. , Sun, J. H. , Wang, M. , Luo, J. T. , Wen, Z. G. , Zhang, S. B. , Zhang, C. F. , Han, J. L. , Huang, Y. X. , Jiang, P. , Li, J. , Li, H. , Zhu, Y. , Men, Y. P.

in 639/33/34/4118 / 639/33/34/4127 / Electromagnetic waves / Emissions / Gamma rays / Humanities and Social Sciences / Magnetic fields / Magnetospheres / multidisciplinary / Neutron stars / Observations / Origin / Polarimetry / Polarization / Quasars / Radiation / Radiation models / Radio bursts / Radio emission / Radio waves / Receivers & amplifiers / Relativistic effects / Science / Science (multidisciplinary) / Telescopes

2020

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2020

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2020

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Journal Article

Diverse polarization angle swings from a repeating fast radio burst source

Chen, M. Z.,

Wang, N.,

Lee, K. J.,

Chen, X. L.,

Luo, R.,

Gan, H. Q.,

Jiang, J. C.,

Guo, Y. J.,

Yuan, J. P.,

Pan, J.,

Li, Z. X.,

Wang, B. J.,

Yan, W. M.,

Hao, L. F.,

Zhang, B.,

Pei, X.,

Xu, H.,

Xu, Y. H.,

Xu, R. X.,

Wang, W. Y.,

Yu, D. J.,

Qian, L.,

Yan, J.,

Caballero, R. N.,

Sun, J. H.,

Wang, M.,

Luo, J. T.,

Wen, Z. G.,

Zhang, S. B.,

Zhang, C. F.,

Han, J. L.,

Huang, Y. X.,

Jiang, P.,

Li, J.,

Li, H.,

Zhu, Y.,

Men, Y. P.

2020

Overview

Fast radio bursts (FRBs) are millisecond-duration radio transients 1 , 2 of unknown origin. Two possible mechanisms that could generate extremely coherent emission from FRBs invoke neutron star magnetospheres 3 – 5 or relativistic shocks far from the central energy source 6 – 8 . Detailed polarization observations may help us to understand the emission mechanism. However, the available FRB polarization data have been perplexing, because they show a host of polarimetric properties, including either a constant polarization angle during each burst for some repeaters 9 , 10 or variable polarization angles in some other apparently one-off events 11 , 12 . Here we report observations of 15 bursts from FRB 180301 and find various polarization angle swings in seven of them. The diversity of the polarization angle features of these bursts is consistent with a magnetospheric origin of the radio emission, and disfavours the radiation models invoking relativistic shocks. Polarization observations of the fast radio burst FRB 180301 with the FAST radio telescope show diverse polarization angle swings, consistent with a magnetospheric origin of the emission.

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Publisher

Nature Publishing Group UK,Nature Publishing Group

Subject

639/33/34/4118

/ 639/33/34/4127

/ Electromagnetic waves

/ Emissions

/ Gamma rays

/ Humanities and Social Sciences

/ Magnetic fields